Day id j



gleiten tutes. aini @fitta DAVID J. BARNETT, OF ALBION, INDIANA.

Letters .Patent No. 80,115, dated July 21, 1868:

Ill/.[IROVFD SAW-GUMMING- DEVICE.

TO ALL WHOM IT MAY CONCERN: e

Be it known `that I, DAVIDJ. BARNETT, of Albion, in the county ofNob1e,. and State of Indiana, have invented ,a new and useful Device forGumming'Saws; and -I do hereby-declare the` following -to be a clear andexact description thereof, suiicient to enable others skilled in the artto which my invention appertains to 4 fully understand and use the same,reference being had tothe accompanying drawings, which make part of thisspecification, and in which l Figure l is a plan of my saw-gummingdevice. V Figures 2 and 3 are front and rear end views in line a: x,fig. 1, the die and plates being set for gumming y circular saws. V i

` Figures 4 and 5 are similar views in the `small line, iig. 1,`thedieand platesfbeing 'set for gumming l straight saws.

l Like letters indicate like parts in the several gures.

y My invention is an improved device for gumming straight or circularsaws, and` consists in providing a sliding ,die-post with removabledies, and operating said post by a cam, and also holding the saw betweenremovable plates, whereby either a circulaior straight saw may bereadily and quickly gummed by merely changing the die and plates, aswill be hereinafter more fully described. i

'In the drawingse A' represents the bedplate, of suitable form andconstruction, and having at oneend abed, B, risingangularly therefrom.

To the inner end of this bed, 13,1 secure longitudinal pieces,fg, towhich are connected transverse pieces or uprights, F G, whichpoint'inwardly, and allow a space to be between themf. A space is thusleft between the piecesf and g, and between the pieces'F Gand the innerface of the rest, B. This space is adapted 'to receive die-plates H,which are constructed-of flat pieces of suitable metal, and

f have openings of size and form corresponding to the dies E, which willbe hereafter referred to.

l The inner face of the bed is grooved vertically, and has its sidestaper inwardly. TheV groove receives a.

plate, I, which is constructed similarly to dieplate H, only that itssides are bevelled, and form, with the l groove, a dove-tail joint. l

l The piecesfg receive screws L z', so as to bear against the plate II,and hold the saw tobe gunnned between it and the Aplate I.

C represents the slide, whichy encircles the bed-plate A, and haslongitudinal motion to and" from the bed, B. On this slide I secure thedie-block or head D, which is fitted to hold the dies E.

The inner face of the head I) is perforated, as at c and d, to receivethe, stems or Shanks of the dies E,

r which dios should be of form corresponding to that of the spacesbetween the teeth of either circular or long saws, 4as shown iugs. 2,3,4, and 5. I p

J is a cam, pivotcd to the bed-plate A at the end opposite to the bed B,by means of a. pin or journal, z'. An opening is made in the peripheryof this cam to receive a handle,K, whereby the cam may bc readilyoperated, and thereby advance the slideC, and thus carry the dieEtowardsthe plate I through the space between. the pieces FG. l

The operation is as follows: v

When a circular saw is to begummed, the die-plates H I areplaced intothc-space at the 4inner end of the restB, and have the openings-facedownwards, as shown in iig. 3. The saw is introduced into this spacebetween the plates, and secured in position by means of the screws lzz'. The die E is inserted into the lower opening, d, 0f the tie-head. l

The cam Jis now rotated, so that it will advance the slide O.

The die passes through the opening in plate H, and as it enters theopening in the plate I, it outs away or gums the saw.

The motionof the cam being reversed, the slide C is free to bewithdrawn. The saw may be shifted, and another cut be made, and theoperation thus continued until the whole saw is gummed. A

To gum long or straight saws, the position of the plates H I must bereversed, that is, their openings face upwards, as shown in g. 5, and itis necessary that the openingszin the plates should correspond with thepecu- A liar die required, consequent to the shape of the teeth in longsaws di'ering from those in circular saws.

The dieis placed in the upper opening, c, of the die-block, and the sawbeing introduced, and retained iu place by the screws h z', passingthrough the upper openings in the pieces F G, the cam J is rotated, thedie advanced, and the saw; is gummed the same as in the previousoperation. v n

It will be seen that by means of different dies and die-plates, any kindof/ saws may b e readily and quickly gummed. I

Having thus described my invention, what I claim as new, and'desire tosecure by Letters Patent, is

The saw-gumming device, consisting of bed-plate A, bed B, slide C,die-block D, removable dies E, removable slotted plates H I,screw-plates F G, and-'cam J, constructed, arranged, andoperatingsubstantially as rep-v .resented and described. .i

The above specification of my device for gummin'g saws signed thiseleventh day of December, 1867.

- DAVID J. BARNETT.

Witnesses:

JACK D. BLACK, SAML E. ALvoRD.

